- The definition of immutable is not able to be changed.
An example of immutable is something that has happened and cannot be reversed.
immutable definition by Webster's New World
never changing or varying; unchangeable
Origin: Middle English ; from Classical Latin immutabilis: see in- and amp; mutable
immutable definition by American Heritage Dictionary
Not subject or susceptible to change.
- im·muˌta·bilˈi·ty, im·muˈta·ble·ness noun
- im·muˈta·bly adverb